{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:41.065906", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2023-Mar-09_to_2023-Mar-14_293.5_-3.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2023030000338}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "March 09 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 14 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 148176.1890403563}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Brazil"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -3.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -5.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -1.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-66.68, -4.18], [-67.03, -4.03], [-67.18, -3.68], [-67.25, -3.65], [-67.5, -3.75], [-67.75, -3.65], [-68.0, -3.75], [-68.53, -3.53], [-68.75, -3.0], [-68.65, -2.75], [-68.75, -2.5], [-68.65, -2.25], [-68.75, -2.0], [-68.53, -1.47], [-68.18, -1.32], [-68.03, -0.97], [-67.5, -0.75], [-67.2, -0.88], [-67.03, -0.47], [-66.5, -0.25], [-66.25, -0.35], [-66.0, -0.25], [-65.47, -0.47], [-65.25, -1.0], [-65.37, -1.3], [-65.25, -1.35], [-65.0, -1.25], [-64.75, -1.35], [-64.5, -1.25], [-64.25, -1.35], [-64.18, -1.32], [-64.03, -0.97], [-63.5, -0.75], [-62.97, -0.97], [-62.82, -1.32], [-62.47, -1.47], [-62.25, -2.0], [-62.35, -2.25], [-62.25, -2.5], [-62.35, -2.75], [-62.25, -3.0], [-62.47, -3.53], [-63.0, -3.75], [-63.25, -3.65], [-63.5, -3.75], [-63.75, -3.65], [-63.82, -3.68], [-63.97, -4.03], [-64.5, -4.25], [-64.75, -4.15], [-64.82, -4.18], [-64.97, -4.53], [-65.32, -4.68], [-65.35, -4.75], [-65.25, -5.0], [-65.35, -5.25], [-65.25, -5.5], [-65.47, -6.03], [-66.0, -6.25], [-66.25, -6.15], [-66.5, -6.25], [-67.03, -6.03], [-67.25, -5.5], [-67.03, -4.97], [-66.68, -4.82], [-66.65, -4.75], [-66.75, -4.5], [-66.65, -4.25], [-66.68, -4.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.02999999999997, -2.53], [-68.25, -2.0], [-68.02999999999997, -1.47], [-67.5, -1.25], [-67.25, -1.35], [-67.0, -1.25], [-66.47000000000003, -1.47], [-66.32, -1.82], [-65.97000000000003, -1.97], [-65.75, -2.5], [-65.85000000000002, -2.75], [-65.75, -3.0], [-65.97000000000003, -3.53], [-66.5, -3.75], [-66.75, -3.65], [-67.0, -3.75], [-67.52999999999997, -3.53], [-67.75, -3.0], [-67.64999999999998, -2.75], [-67.68, -2.68], [-68.02999999999997, -2.53]]]]}, "2023-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -2.5], [-68.64999999999998, -2.25], [-68.75, -2.0], [-68.52999999999997, -1.47], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.76906022705606, 24.666057402776346, 24.559006404965487, 24.101890531891115, 24.61449146343699, 24.54263784666358]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.461425693102058, 23.930708824185615, 23.983612340957677, 23.317238242278506, 24.08675668094253, 24.195716904228163]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.224111543982976, -1.322148448832265, -1.5163719419243256, -1.9875497481772169, -1.5062998275676156, -1.285153883305341]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4033182774136321, -1.6933823769085734, -1.8806953386664418, -2.7606598411363166, -1.9140708596829654, -1.5946374874252456]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3988422712292008, -1.4603733769139684, -1.5438757176332638, -2.0395683583949884, -1.5754742425908095, -1.5814958572016335]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.592842885977702, -1.9168786962092013, -1.942851764106819, -2.832908611254831, -2.0384135777302466, -1.9810073655783424]}}